From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx> Add the function tracefs_kprobe_clear_probe() that will remove a single kprobe. If the @force parameter is set, it will disable that probe in all instances (including the top level instance) before removing it. Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> --- include/tracefs.h | 1 + src/tracefs-kprobes.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+) diff --git a/include/tracefs.h b/include/tracefs.h index 19b9b49d2dae..d7980c773b3d 100644 --- a/include/tracefs.h +++ b/include/tracefs.h @@ -218,4 +218,5 @@ void tracefs_trace_pipe_stop(struct tracefs_instance *instance); int tracefs_kprobe_raw(const char *system, const char *event, const char *addr, const char *format); int tracefs_kprobe_clear(bool force); +int tracefs_kprobe_clear_probe(const char *system, const char *event, bool force); #endif /* _TRACE_FS_H */ diff --git a/src/tracefs-kprobes.c b/src/tracefs-kprobes.c index a6faf69fc010..6f3fbac35d76 100644 --- a/src/tracefs-kprobes.c +++ b/src/tracefs-kprobes.c @@ -184,3 +184,32 @@ int tracefs_kprobe_clear(bool force) free(content); return ret; } + +int tracefs_kprobe_clear_probe(const char *system, const char *event, bool force) +{ + char **instance_list; + char *content; + int ret; + + if (!system) + system = "kprobes"; + + ret = asprintf(&content, "-:%s/%s", system, event); + if (ret < 0) + return -1; + + /* + * Since we know we are disabling a specific event, try + * to disable it first before clearing it. + */ + if (force) { + instance_list = tracefs_instances(NULL); + disable_events(system, event, instance_list); + tracefs_list_free(instance_list); + } + + ret = tracefs_instance_file_append(NULL, KPROBE_EVENTS, content); + free(content); + + return ret < 0 ? -1 : 0; +} -- 2.30.2